Month	Percent
1978-02-01	5.00281905541367
1978-03-01	4.94444464729003
1978-04-01	4.86990569906959
1978-05-01	4.91224452529712
1978-06-01	4.80988264547599
1978-07-01	5.21644102508277
1978-08-01	5.40568168157736
1978-09-01	5.19360559581274
1978-10-01	5.07123141105451
1978-11-01	4.95254366408894
1978-12-01	4.85830224490755
1979-01-01	5.87474503274463
1979-02-01	5.08501579978203
1979-03-01	4.70309566538173
1979-04-01	4.90386333618433
1979-05-01	5.09238901408713
1979-06-01	4.91565737703808
1979-07-01	5.29782552149156
1979-08-01	5.54397512717921
1979-09-01	5.01897311880024
1979-10-01	5.14696828182197
1979-11-01	5.44837983269737
1979-12-01	5.36589391200670
1980-01-01	5.97660590290895
1980-02-01	5.33155318462416
1980-03-01	5.09012955151646
1980-04-01	5.64668521409590
1980-05-01	5.24492215716212
1980-06-01	5.46562656155294
1980-07-01	5.35999367678204
1980-08-01	5.46902202268020
1980-09-01	4.94811150877052
1980-10-01	5.27214940771044
1980-11-01	5.56355207125976
1980-12-01	5.25566660425267
1981-01-01	6.00395513687788
1981-02-01	5.57621099704381
1981-03-01	5.30746716761017
1981-04-01	5.53907811659306
1981-05-01	5.75760409069431
1981-06-01	5.72487602784707
1981-07-01	5.59011161108056
1981-08-01	5.76915739909996
1981-09-01	5.20859523438389
1981-10-01	6.07669593487421
1981-11-01	5.88474553193618
1981-12-01	5.86665149762479
1982-01-01	6.57985346237432
1982-02-01	5.68163299708943
1982-03-01	5.51500108962080
1982-04-01	5.92534532833589
1982-05-01	5.89068091668345
1982-06-01	5.98644355643338
1982-07-01	5.82065049511678
1982-08-01	6.29888605782985
1982-09-01	5.53005341912017
1982-10-01	5.50460576812941
1982-11-01	5.83563679259582
1982-12-01	5.80801681729023
1983-01-01	6.78616718759804
1983-02-01	5.60909755787889
1983-03-01	5.52106440699160
1983-04-01	5.88139754715445
1983-05-01	5.98744896608616
1983-06-01	5.87301016019113
1983-07-01	5.61326623854786
1983-08-01	6.01493776118252
1983-09-01	5.26225614268234
1983-10-01	5.90753019285155
1983-11-01	6.20100340706788
1983-12-01	6.01778381881435
1984-01-01	6.70935464188152
1984-02-01	5.68283348252322
1984-03-01	5.16116069263342
1984-04-01	5.92412941755887
1984-05-01	5.76495975661582
1984-06-01	5.95236557661627
1984-07-01	6.01824840319315
1984-08-01	6.33073982765230
1984-09-01	5.79481466797297
1984-10-01	6.26328754818620
1984-11-01	6.48681611496803
1984-12-01	6.46541447715329
1985-01-01	7.26359612396698
1985-02-01	6.31062283889497
1985-03-01	6.14048861406719
1985-04-01	6.98330521489974
1985-05-01	6.55966165414970
1985-06-01	6.66174665985462
1985-07-01	6.58652669390620
1985-08-01	6.51221622037995
1985-09-01	6.12480670785507
1985-10-01	6.94148850839562
1985-11-01	6.12044802506013
1985-12-01	6.45373131202702
1986-01-01	7.11543287160990
1986-02-01	6.22414998451144
1986-03-01	5.91270209341954
1986-04-01	6.63242899905000
1986-05-01	6.71688145810028
1986-06-01	6.09652342425528
1986-07-01	6.40059984756028
1986-08-01	6.53510866146183
1986-09-01	5.72520069677309
1986-10-01	6.31342948864823
1986-11-01	6.55188625920370
1986-12-01	6.44307072111592
1987-01-01	7.18045774544143
1987-02-01	6.69039881288103
1987-03-01	5.85060545838332
1987-04-01	6.74492137907644
1987-05-01	6.62150683378743
1987-06-01	6.44632372652462
1987-07-01	6.41984459971933
1987-08-01	6.70735631191637
1987-09-01	6.42328122648356
1987-10-01	6.96929481224248
1987-11-01	7.43443189958522
1987-12-01	7.06346644552886
1988-01-01	7.63419117450834
1988-02-01	7.07742332467363
1988-03-01	6.46543823092079
1988-04-01	6.35756653379093
1988-05-01	6.83588288532998
1988-06-01	6.77200741576007
1988-07-01	7.25906504813109
1988-08-01	7.70620447278542
1988-09-01	6.68905212597881
1988-10-01	6.85368234698211
1988-11-01	6.86405707517446
1988-12-01	6.91480775398749
1989-01-01	7.97076398908280
1989-02-01	6.97193588461224
1989-03-01	7.14414912643579
1989-04-01	6.93220006622237
1989-05-01	6.84160970448549
1989-06-01	7.11391104482362
1989-07-01	7.11015301468946
1989-08-01	7.29112924578130
1989-09-01	6.67810603644382
1989-10-01	7.19378469788557
1989-11-01	6.82544732491275
1989-12-01	6.67654760773004
1990-01-01	7.42241346462504
1990-02-01	6.74724149837142
1990-03-01	6.69194248299021
1990-04-01	6.73874791625611
1990-05-01	6.48298350356369
1990-06-01	6.56004844543501
1990-07-01	6.35895112581103
1990-08-01	6.94091077774346
1990-09-01	6.20958021798506
1990-10-01	6.83396945580054
1990-11-01	6.94902393104983
1990-12-01	6.76152424192499
1991-01-01	7.42675678526007
1991-02-01	6.64929667525386
1991-03-01	6.46176653336933
1991-04-01	6.56256534949714
1991-05-01	6.62594014938224
1991-06-01	6.89855700539247
1991-07-01	7.26865852022929
1991-08-01	7.09228157046435
1991-09-01	6.43956980591321
1991-10-01	6.99677367130916
1991-11-01	7.44449127928694
1991-12-01	7.20495335521965
1992-01-01	7.93329075558301
1992-02-01	7.22766665169517
1992-03-01	7.23313995976416
1992-04-01	7.44532998870791
1992-05-01	7.48498316945819
1992-06-01	7.56794876165747
1992-07-01	7.47402703220988
1992-08-01	7.97809236378738
1992-09-01	7.35641313667542
1992-10-01	7.58556096132102
1992-11-01	7.99412693959286
1992-12-01	7.46520437308116
1993-01-01	7.97079439672984
1993-02-01	7.75172692529961
1993-03-01	7.52547828870034
1993-04-01	7.95875093423990
1993-05-01	7.74191245876877
1993-06-01	7.48634206931014
1993-07-01	7.78223180385060
1993-08-01	8.13674908605784
1993-09-01	7.32961918792925
1993-10-01	7.61671648900745
1993-11-01	7.97342131606598
1993-12-01	7.82736041351296
1994-01-01	8.72527260440629
1994-02-01	8.24472618303422
1994-03-01	8.24630554402607
1994-04-01	8.33506605127866
1994-05-01	8.47210451863663
1994-06-01	8.24408142865004
1994-07-01	8.05227519129692
1994-08-01	8.65328837952089
1994-09-01	7.87853824770716
1994-10-01	8.56569876324904
1994-11-01	8.80267829658370
1994-12-01	8.59698824247389
1995-01-01	9.00079489992016
1995-02-01	8.20553155140814
1995-03-01	8.22887354498039
1995-04-01	8.32764388377186
1995-05-01	8.34146567357981
1995-06-01	8.37765620664290
1995-07-01	8.35717534216412
1995-08-01	8.54564417196822
1995-09-01	7.51734945347772
1995-10-01	8.31188482620280
1995-11-01	8.16004065238036
1995-12-01	7.96862252531201
1996-01-01	8.49497082093758
1996-02-01	7.81285762559106
1996-03-01	8.22413657467818
1996-04-01	8.53130655537135
1996-05-01	8.24453678815126
1996-06-01	8.44709515802755
1996-07-01	8.46206345698221
1996-08-01	8.55046396431502
1996-09-01	8.14092173601200
1996-10-01	8.73123082552748
1996-11-01	8.81764085046491
1996-12-01	8.63516519911904
1997-01-01	9.15973932876996
1997-02-01	8.73495834045361
1997-03-01	8.48524288963624
1997-04-01	9.04205824519027
1997-05-01	8.86924212998498
1997-06-01	9.00716792711668
1997-07-01	8.72711797202984
1997-08-01	9.46852716188154
1997-09-01	8.44261813538944
1997-10-01	9.32435257334458
1997-11-01	8.98592692872062
1997-12-01	8.98606285904474
1998-01-01	9.43059783544979
1998-02-01	8.90954294793791
1998-03-01	9.12781135643140
1998-04-01	9.28191384478482
1998-05-01	9.19885360723749
1998-06-01	9.21269323014840
1998-07-01	9.04094513452801
1998-08-01	9.72563900522191
1998-09-01	8.51276800295873
1998-10-01	9.28078546069009
1998-11-01	9.37862974895828
1998-12-01	9.21289534295524
1999-01-01	9.78993635467374
1999-02-01	9.27387053585382
1999-03-01	9.21692622845832
1999-04-01	9.43073371498949
1999-05-01	9.56349973727232
1999-06-01	9.51937697079871
1999-07-01	9.59703481206554
1999-08-01	10.01994541337720
1999-09-01	9.13345698204626
1999-10-01	9.64190874956896
1999-11-01	10.11682055918730
1999-12-01	9.54680140107048
2000-01-01	10.50575537541020
2000-02-01	9.91957191279989
2000-03-01	9.77177958996586
2000-04-01	9.78482305089726
2000-05-01	9.76899938881254
2000-06-01	9.60232201607158
2000-07-01	9.48592759318724
2000-08-01	9.92290365759603
2000-09-01	9.19485129168257
2000-10-01	9.73691609094867
2000-11-01	10.08281612142940
2000-12-01	9.53810220170185
2001-01-01	10.64329802411970
2001-02-01	9.73544506305960
2001-03-01	10.09280123919350
2001-04-01	9.61530172881184
2001-05-01	9.75191210732740
2001-06-01	9.82028768478999
2001-07-01	9.91320514233523
2001-08-01	10.04655282735710
2001-09-01	9.35394387582868
2001-10-01	9.65682321021024
2001-11-01	10.05011529165980
2001-12-01	9.67369855339051
2002-01-01	10.08422654067640
2002-02-01	9.78969258620179
2002-03-01	9.72217818091688
2002-04-01	9.67709611611104
2002-05-01	9.61475018230904
2002-06-01	9.58097724162521
2002-07-01	10.06094842108750
2002-08-01	10.06462235245320
2002-09-01	9.61411260860785
2002-10-01	10.06098634757960
2002-11-01	9.94582651041111
2002-12-01	9.63597740009703
2003-01-01	10.24024677895610
2003-02-01	9.53279554227271
2003-03-01	9.86000788443140
2003-04-01	10.03116818147900
2003-05-01	10.32917479617230
2003-06-01	10.18074373736170
2003-07-01	10.47547689289910
2003-08-01	10.76348033523820
2003-09-01	9.89448354201173
2003-10-01	10.06130722341080
2003-11-01	10.52349448184600
2003-12-01	9.97320951068196
2004-01-01	10.45050964304020
2004-02-01	10.05432086308030
2004-03-01	9.96944967463536
2004-04-01	9.97782472245050
2004-05-01	10.15842341046980
2004-06-01	10.12602496849880
2004-07-01	10.30925864004640
2004-08-01	10.69418326087750
2004-09-01	9.63990270789939
2004-10-01	10.17440497632120
2004-11-01	10.13272712389320
2004-12-01	9.83354419041099
2005-01-01	10.49068495429070
2005-02-01	9.66318220757159
2005-03-01	9.61288367080947
2005-04-01	9.53625567193813
2005-05-01	9.77369010244227
2005-06-01	9.48564645750802
2005-07-01	9.92710497287308
2005-08-01	9.74182745882975
2005-09-01	8.97491153150015
2005-10-01	9.63889172615094
2005-11-01	10.05227231674140
2005-12-01	9.37394863213752
2006-01-01	10.15934736372690
2006-02-01	9.65883636489029
2006-03-01	9.64940428991514
2006-04-01	9.74467328046758
2006-05-01	9.84909411289959
2006-06-01	9.74971162050363
2006-07-01	9.37372514507264
2006-08-01	9.91614187972666
2006-09-01	9.13413258768194
2006-10-01	9.74213941395554
2006-11-01	9.88085624628974
2006-12-01	9.19093667889860
2007-01-01	10.23978955607720
2007-02-01	9.29050936624140
2007-03-01	9.27312690661605
2007-04-01	9.35193059988599
2007-05-01	9.18128702038878
2007-06-01	9.10286419685814
2007-07-01	9.14855248856061
2007-08-01	9.55251920091660
2007-09-01	8.44932435305934
2007-10-01	9.34907485252620
2007-11-01	9.04032956774643
2007-12-01	8.62229968309498
2008-01-01	9.38232232599672
2008-02-01	9.00936238032360
2008-03-01	8.71783428155522
2008-04-01	9.07061515429295
2008-05-01	9.09080750001690
2008-06-01	8.95003189699386
2008-07-01	9.22228980127597
2008-08-01	9.45193571941652
2008-09-01	8.64846007107374
2008-10-01	8.87571063868938
2008-11-01	9.24932627848505
2008-12-01	9.13353003547408
2009-01-01	9.69630507184762
2009-02-01	9.64784749570017
2009-03-01	9.77366244934556
2009-04-01	9.72964851856036
2009-05-01	9.25659383974795
2009-06-01	9.72200811083022
2009-07-01	9.72135902851388
2009-08-01	10.14823549304600
2009-09-01	9.14616593336557
2009-10-01	9.54134826162059
2009-11-01	9.85076591443365
2009-12-01	9.51388835699961
2010-01-01	9.97970990024367
2010-02-01	9.40376191294327
2010-03-01	9.39622139690462
2010-04-01	9.74615624950241
2010-05-01	9.59384994116622
2010-06-01	9.63354463531393
2010-07-01	9.68462008552790
2010-08-01	9.79553890139472
2010-09-01	8.80959889115700
2010-10-01	9.06572758825134
2010-11-01	9.27734549574516
2010-12-01	8.86189351238507
2011-01-01	9.64182237104126
2011-02-01	9.00116561564264
2011-03-01	8.98502793776011
2011-04-01	9.30524943200658
2011-05-01	9.29763775795328
2011-06-01	9.53757046589782
2011-07-01	9.37042884909400
2011-08-01	9.93830337366223
2011-09-01	9.18852087153075
2011-10-01	9.32855730394176
2011-11-01	9.48327953583180
2011-12-01	9.72559713823740
2012-01-01	10.00953126537010
2012-02-01	9.44993012993616
2012-03-01	9.56218995163988
2012-04-01	9.81995218239913
2012-05-01	9.79290527340435
2012-06-01	9.99930725239841
2012-07-01	9.87254967339980
2012-08-01	10.50993139790740
2012-09-01	9.37802695828644
2012-10-01	9.80192488561756
2012-11-01	10.41542923038670
2012-12-01	9.74273401896112
2013-01-01	10.28466694200660
2013-02-01	9.56839213114039
2013-03-01	9.64409845589462
2013-04-01	9.94785326325295
2013-05-01	9.71963806867933
2013-06-01	9.57626618558708
2013-07-01	9.90248973714788
2013-08-01	10.43563849664940
2013-09-01	9.62658251303223
2013-10-01	9.88914845655995
2013-11-01	9.89054782156836
2013-12-01	9.85658667201952
2014-01-01	10.57627217723920
2014-02-01	9.64475572460784
2014-03-01	10.08056152635870
2014-04-01	10.03850111558820
2014-05-01	10.03557315888770
2014-06-01	10.29037324054550
2014-07-01	10.24510973803040
2014-08-01	10.11634317209320
2014-09-01	10.16138870535580
2014-10-01	10.27496026303040
2014-11-01	10.21627561655180
2014-12-01	9.96963267199305
2015-01-01	10.39599829318170
2015-02-01	9.01048100510481
2015-03-01	9.32646258067432
2015-04-01	9.77647667019768
2015-05-01	9.49529306310499
2015-06-01	9.87748104284100
2015-07-01	9.60093163698654
2015-08-01	9.54625869336876
2015-09-01	9.75198327580039
2015-10-01	9.78945113734586
2015-11-01	10.04007409141160
2015-12-01	9.82543065097254
2016-01-01	9.98457804619696
2016-02-01	9.31486972061877
2016-03-01	9.89402888219185
2016-04-01	9.88037274047996
2016-05-01	9.91332376796428
2016-06-01	10.02255419556490
2016-07-01	9.89880037387340
2016-08-01	10.05931612251940
2016-09-01	10.10469021504370
2016-10-01	9.69495128744442
2016-11-01	9.72653876186607
2016-12-01	9.64031814807444
2017-01-01	10.88170304698890
2017-02-01	9.05541128966179
2017-03-01	9.51895717069554
2017-04-01	9.60422210205814
2017-05-01	9.53006706593171
2017-06-01	9.70663570320466
2017-07-01	9.78108703567150
2017-08-01	9.86881016855297
2017-09-01	9.79351194715626
2017-10-01	9.68983713172931
2017-11-01	9.50061642601601
2017-12-01	9.28583683593662
2018-01-01	10.26513922968830
2018-02-01	9.11063675533666
2018-03-01	9.48913979724905
2018-04-01	9.35860606195289
2018-05-01	9.36335911988527
2018-06-01	9.61043595496008
2018-07-01	9.63556333275711
2018-08-01	9.77324797449530
2018-09-01	9.83318735214914